@selfpentest/bin-confusionnpm
@selfpentest/bin-confusion is a confirmed malicious npm package (MAL-2026-17292) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.0.1). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in @selfpentest/bin-confusion (npm)
What this malware does
package.json registers a bin entry named npm pointing at npm.js, deliberately colliding with the core npm CLI. Once this package is installed as a dependency, any npm... invocation in a consuming project's scripts resolves via node_modules/.bin to this shim, executing the shipped code before (or instead of) the real npm. npm.js contains a steal() routine that reads process.env.HOME, process.env.SECRET, and the first 30 bytes of ~/.ssh/known_hosts, concatenates them into a query string, and issues a fetch GET to http://localhost:1337/. The destination is loopback in this build, but the collected data (installer SSH known_hosts contents and environment secrets) is packaged into a functioning exfiltration primitive that fires whenever the shadow npm shim is invoked from the installer's build scripts. The scope name (@selfpentest) and README frame this as a demonstration, but the shipped tarball is a working bin-shadow + credential-read + network-send chain against installers who add it as a dependency.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for @selfpentest/bin-confusion (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging @selfpentest/bin-confusion across your stack and pipelines.
If you installed it — respond
@selfpentest/bin-confusion is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If @selfpentest/bin-confusion was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks @selfpentest/bin-confusion before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks @selfpentest/bin-confusion-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.